I'm trying to write a function to check if the array of objects is a subset of another array of objects and I want it to return a boolean.
Here's what I have so far:
var arr1 = [
{ answer: "dispersed", question: "where_is_your_flare_located" },
{ answer: "continuous", question: "what_frequnecy_of_measurement_do_i_require_to_assess_methane_emissions" }
];
var arr2 = [
{ question: 'where_is_your_flare_located', answer: 'dispersed' },
{ question: 'what_frequnecy_of_measurement_do_i_require_to_assess_methane_emissions', answer: 'periodic' },
{ question: 'how_long_is_the_flare_expected_to_be_in_operation', answer: 'n_a' },
{ question: 'am_i_managing_an_existing_flare_or_planning_to_install_a_new_one', answer: 'n_a' },
{ question: 'do_i_have_access_to_assistance_gases', answer: '' },
{ question: 'do_i_have_access_to_purge_gas', answer: '' },
];
var compare = arr2.filter(function(o) {
var resultQuestion = o.question;
var resultAnswer = o.question;
return arr1.some(function(i) {
var filterQuestion = i.question;
var filterAnswer = i.question;
return ((filterQuestion === resultQuestion) && (resultAnswer === filterAnswer));
});
});
console.log(compare)I don't understand what I'm doing wrong. I will appreciate any help or explanation.
This is simply a case of seeing if every element in arr1 exists in arr2
var arr1 = [
{ answer: "dispersed", question: "where_is_your_flare_located" },
{ answer: "continuous", question: "what_frequnecy_of_measurement_do_i_require_to_assess_methane_emissions" }
// comment the above and uncomment below to return true
//{ answer: "periodic", question: "what_frequnecy_of_measurement_do_i_require_to_assess_methane_emissions" }
];
var arr2 = [
{ question: 'where_is_your_flare_located', answer: 'dispersed' },
{ question: 'what_frequnecy_of_measurement_do_i_require_to_assess_methane_emissions', answer: 'periodic' },
{ question: 'how_long_is_the_flare_expected_to_be_in_operation', answer: 'n_a' },
{ question: 'am_i_managing_an_existing_flare_or_planning_to_install_a_new_one', answer: 'n_a' },
{ question: 'do_i_have_access_to_assistance_gases', answer: '' },
{ question: 'do_i_have_access_to_purge_gas', answer: '' },
];
const isSubset = arr1.every(a1 => arr2.find(a2 => a1.answer == a2.answer && a1.question == a2.question));
console.log(isSubset);